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Revista Chapingo serie ciencias forestales y del ambiente
versión On-line ISSN 2007-4018versión impresa ISSN 2007-3828
Resumen
QUINONEZ-MARTINEZ, Miroslava et al. Growth of Pinus arizonica Engelm. plants inoculated with Pisolithus tinctorius and Astraeus hygrometricus under greenhouse conditions. Rev. Chapingo ser. cienc. for. ambient [online]. 2023, vol.29, n.2, pp.99-118. Epub 05-Abr-2024. ISSN 2007-4018. https://doi.org/10.5154/r.rchscfa.2022.08.053.
Introduction:
Ectomycorrhizal associations are an essential component of nutrient cycling and forest health.
Objective:
To evaluate the effects of spore inoculation of Pisolithus tinctorius (Pers.) Coker & Couch and Astraeus hygrometricus (Pers.) Morgan on Pinus arizonica Engelm. growth.
Materials and methods:
Three mycorrhizal inoculation treatments (A. hygrometricus, P. tinctorius and Ectorrize®) were applied with three volumes (10, 25 and 50 mL: 106 spores∙mL-1) and a control group with no inoculum. The variables measured were mycorrhizal survival and colonization; plant height; shoot length and diameter; root length and biomass. The ectomycorrhizas were characterized and a mineral analysis of nutritional elements in the shoot and root was performed. The effects of fungal species and inoculum volume were determined by randomized ANOVA (α = 0.05).
Results and discussion:
The volume of this inoculum had no significant effect (P > 0.05) on the variables, but there were differences between the fungal species and the control (P ≤ 0.05); with P. tinctorius having the greatest significant effect. Inoculated plants had higher survival rate and higher amount of minerals in the composition compared to non-inoculated plants (P ≤ 0.05). The ectomycorrhizas showed clear morphological differences; the Hartig net was observed as an indicator.
Conclusion:
Inoculation with the ectomycorrhizal fungi improved the morphological development of P. arizonica. The smallest inoculum dose (10 mL: 106 spores∙mL-1) is recommended, mainly of the fungus P. tinctorius.
Palabras llave : ectomycorrhizae; mineral analysis; symbiosis; Ectorrize; mycorrhizal system.